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3D Printed AR15 Much Improved, More Reliable

Discussion in 'General Gun Discussions' started by Dean Weingarten, Jan 11, 2013.

  1. Dean Weingarten

    Dean Weingarten Well-Known Member

    Major improvements have been made in 3D printed AR15 rifles. The part of the rifle that is defined as a gun by federal law is the only part printed. The rest of the parts are commonly available on the free market.

    People have made guns at home since guns were invented in the 1500’s or before. However, the ability to print out your own AR15 lower receiver at home, without having to use steel files, a grinder, or other home workshop tools, has caught the attention of the public in this digital age.

    Defense Distributed is the organization that aims to make the promise of the Second Amendment a practical reality for everyman at the touch of a button. No longer will criminals in and out of government be able to be reasonably certain that their victims are unarmed.

    The first AR15 lower printed by Defense Distributed was matched to a barrel chambered for the 5.7x28 cartridge, a pistol/rifle round less powerful than the more common .223. It failed after six rounds.

    All of their design work and testing is now being done for and with the .223 cartridge. Several different printers and technologies have been tested. Stress analysis with sophisticated engineering design tools has been used to reduce the number of prototypes required. The lowers will now work reliably for 40-60 shots before failing. The highest round count so far has been over 80.

    The failures occur at the rear take down pins, through to the hand grip.

    Defense Distributed believes that their latest improvement will be reliable for 100 rounds. They expect to release the build files to the public in the next few weeks.

    They will dedicate it to Joe Biden and company.

    Dean Weingarten

    Pictures and working links at the site:

  2. M-Cameron

    M-Cameron member

    wow, nice work!

    have you looked into modifying the external dimensions of the lower to "beef" them up to better deal with the stresses?
  3. Dean Weingarten

    Dean Weingarten Well-Known Member

    Progress is being made rapidly

    They are working it. They have considerable talent and some money supporting them now. It is happening. They sound very confident.

    I believed that this interim report would be of interest, as the old media is ignoring them.
  4. gunsandreligion

    gunsandreligion Well-Known Member

    You really need to start on a 30rd mag that is easily printable. It would show the futility of a capacity ban.
  5. Dean Weingarten

    Dean Weingarten Well-Known Member

    Magazines are Here, More are Coming

    They are working to have printed standard capacity magazines. They say that the magazines are very easy to do. I posted a story on the files available for an AR 15 magazine, and Cody Wilson of Defense Distributed says that people have successfully printed AK magazines without a problem.

    More later when I have enough for a story.
  6. poboy6

    poboy6 Well-Known Member

    I want to see video footage!
  7. Silverado6x6

    Silverado6x6 Well-Known Member

    I have seen the 5 round printed AR mag, won't be too difficult to make larger ones.

    With a 1.5 million back order of AR mags a person can get their money back pretty quick after buying a printer and making several dozen a day.

    Doesn't matter to what degree any mag law takes effect, anyone can now make their own, the tech cat is out of the bag.
  8. Dean Weingarten

    Dean Weingarten Well-Known Member

    The oppressors do not care. They want them to be Illegal

    The important thing for statists is that they are illegal. In a generation or two, grandpa's old AR15 and magazines will be turned in for an extra food ration.

    What they aim to do is to eliminate the gun culture in America, and teach all to be serfs. They are well on their way. It is cultural Genocide.
  9. Dean Weingarten

    Dean Weingarten Well-Known Member

    I think there is video footage at the Defense Distributed link.
  10. gunsandreligion

    gunsandreligion Well-Known Member

    Thats why grampa has to teach his grandkids to value that ar15. The key use that I see for these 3d printed weapon parts it the arguments they provide for the futility of a AWB. I believe the majority of politicians only veiw the topic of guns as an issue to get votes. Therefore the mindset of the people is so important, and having government controlled education is much more effective than gun control at suppresing the sheeple.
  11. Kramer Krazy

    Kramer Krazy Well-Known Member

    I wonder how many rounds they'd get out of the lower if they built it into a 9mm version. :evil:
  12. TheGloriousTachikoma

    TheGloriousTachikoma Well-Known Member

    their blog also says they're testing 20 and 30 round printed magazines, too
  13. Jim NE

    Jim NE Well-Known Member

    Nice post, Dean.

    Look at the Dept. Of Justice graph that tracks violent crime during the twentieth century, and there are two obvious high points:

    1) Everything after the late 1960's

    2) Prohibition (after organized crime got their act together)

    And the black market for banned guns will be at least as great as the black market for alcohol. Welcome back, Al Capone.
  14. HorseSoldier

    HorseSoldier Well-Known Member


    And this.

    The analogy to bath tub gin back under Prohibition seems apt.
  15. gdcpony

    gdcpony Well-Known Member

    I think I can work the reliability and lengthen the life of these after printing with a simple bracket. If that failure is what I believe it to be.
  16. Claude Clay

    Claude Clay Well-Known Member

    in the mid 70's i worked at a tab house ( an appendage of Gallop Poll in NYC) and back than computers were huge and our color copier was a $40,000 machine. long story short--seems the go-for boys at the office were printing money using the copier. mostly 1's and 5's to buy park joints, gamble and pay for lunch. at least thats what they told the Treasury Men who tracked the money back to us about 9 months after we got the machine. so the T-Men 'adjusted' our machine and put a special lock on it ( free, go figure...) so that the green of money could not be produced. this copier was so good it even did the security color threads in the money.

    if they can adjust one type of machine---id wager they can do it to others. so it may be that 3-d printers are going to have special default programs and/or be registered.
  17. M-Cameron

    M-Cameron member

    they really cant register 3d printers......as it is currently possible to print a 3d printer with another 3d printer.....

    also, money is pretty easy to "lock out" as it all looks the same.......what does a gun look like?
  18. gunsandreligion

    gunsandreligion Well-Known Member

    If they put software blocks on, it would only be a matter of time before there was a "jailbreak".
  19. M-Cameron

    M-Cameron member

    well the thing is, 90% of the software out there is open source....its not coming from a company, you really cant mandate a software block on opensource software.

    even if they could, how would the software work?.....like i said, what does a gun look like?......

    there is no way to differentiate a 'gun' from a 'bracket'....and assuming they somehow could, you simply change the model cosmetically enought to get around the software.
  20. wacki

    wacki Well-Known Member

    this it's excellent talking points to be used against those anti gunners that only worry about crime.....

    Sent from my SCH-I500 using Tapatalk 2

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